#include <iostream>
// #include <range/v3/view/all.hpp>
#include <vector>

int main(int argc, char *argv[]) {
  std::vector<int> v{1, 2, 3, 4, 5, 6, 7, 8};

  // std::cout << ranges::views::all(v) << "\n";
  return 0;
}
